Reinforcing member for hollow structures and structure so reinforced.



H. H. HILBORN L C. E. ROEHL. En PoR HOLLOW STRUCTURES .AND STRUUTURB SOREINFORED.

REINFORGING MEMB APPLICATION FILED FEBS, 1909` Patented Jan. 18, 1910.

3 SHEETSWSHEET l.

@X3i [incomes H. H. HLBORN & C. E. ROEHL.

POR HOLLOW STRUCTURES AND STRUCTURE S0 REINF()RGEIIa RBINPORGING MEMBERAPPLICATION FILED rma.s,19o9. 94'?, 1 '78.

Patented Jan. 18,1910.`

3 SHEETS-SHEET 2.

H. H. HILBORN n G. B. ROEHL. Rmrooma MEMBER ron HOLLOW sTRunTUnBs ANDs'rnuo'rnns so nrmronom). APPLICATION FILED PERS, 1909.

Patented Jan. 18,1910.

@35% @Hofbnmo 7 MHZ@ wh/Leases UNITED STATFd HERBERT REIFORCING MEMBERFOB. HOLLOW STRUCTURES vANI) PATENT OFFICE.

STRUCTURE SO REINFORCED.

Application filed February 3,

Specification of Letters Patent.

Patented Jan. 18, 1910.

1909. Serial No. 475,831.

To all whom it may concern.: 4

Be it known that wc, llmumnr H. HILnonN and Cimmacs E. Ronin., citizensof the Dominion ot' Canada and the United States, respectively, andresidents of the borough of Brooklyn, county of Kings, city and State ofNew York, have invented certain new and useful Improrements inReinforcing Members for Hollow Structures and Structure so Reinforced,of which the following is a specilication accompanied by drawings.

This invention relates to reinforcing members for hollow structures,such as trolley poles and the like, and it also relates to the structureso reinforced.

The objects of the invention are to provide an improved reinforcingmeans adapted to be inserted into a hollow metallic trolley pole or likestructure forreintoreing the structure at a point of weakness, as orinstance, at the ground line or at a joint between the sections of thepole.

iAnother object of the invention is to simplify and ehe-apen the methodof reinforcing old poles as set forth in our latcnt No. 909,299, grantedJan. 12, 1909.

To these ends the invention consists ot' the reinforcing members and thestructures so reinforced, substantially as hereinafter fully describedand claimed in this specitication and shown in the accompanyingdrawings, in which- Figure is a vertical sectional View artly brokenaway of a trolley pole remforced in accordance with this invention; Fie.2 is a horizontal sectional View on an en urged Scale on the line lV- Qot' Fig. l; Fig. 3 is a vertical sectional View partly broken away of aole reinforced by a modied form of rein orcing member; F ig.' Lt is atop plan view on an eulargedscale ot' thc Structure shown in F ig. 5',Fig. 5 is an elcvation of the reinforcing member shown in Fig. 3 beforeinsertion in the, pole; Fig. (3 is an elevation of a modified form ot'rcinf forcing member in collapsed position; F i-g.

7 is an elevation of the member shown in Fig. 6 in expanded position;Fig. H is a top plan View of Fig. T on an enlarged scale: 41ig. 9 is anelevation partly in section showing the method of constructing thereinforcing member illustratcd in Fig. 5; Fig. 10 is an elevation partlybroken away and partly in section, showingr the method of constructing amodification of Fig. 9; Figs. 11 to 24 inclusive, are top plan views oft lt has been shown t l l i the pole to reinforce the sections of a polewith ditlcrent forms of ,reinforcing members shown therein; Fig. E25 isa top plan view of a moditication showing in an enlarged detail thepretcrrcd form ot bottoni casting for the cage cr rcint'orcing nu-mbers;Fig. 2G is a \crtical scctional rica' on the line lof-2o ot' Fig. 2); iFig. 2T is a bottom plan View of the casting; tFig. QH is a top planrica' ol the innfr l member tor the casting; Fig. 9 il a \'erti l calsectional rica' on the liuc Q9-Y "lil of Fig.

'.ffo; and Fig. titl is a bottom plan View ot the interior member.

by experience that a becomes so ueakcncd at the ol time, that it iS 'lhccorrosion of various trolley polo ground line in thi` course apt tobreak at` this point. is duc to ualcnand secretions kinds collectingcause of the elicit-ls of electrolysis. Tb,A corro- -aion will sometimescxtcnd entirclil through the shell ot' the pole, and unless` cheap andetiicient means are provided for reinforcing the. pole. it is neresatryto replace the `old poles with ncw ones. Metallic trolley poles areordinarily made in sections ol which the bottom section is the largestin diameter and the top section is thc smallest. and in accordance withthis invention thc old poles are reinforced from the inside instead ofthe outside.. We imei't our reinforcing member through the section ofsmallest diameter at i tite top of the pole and thrust thtI member tdowninto the desired position in one of the larger members. either at theground l line or at one ol the Iioints or other point of form ot' theinvention. a rc constructed so tu'eaknt-ss. ln one t our reinforcingmembers i that they t enable them to pass the siiuillcst diainctcr o thepole and expand inlo the desired position in one of the larger portionsof the pole. in another l'orm ot' thc invention a plurality of rods orbats oi an)y desired .structural lshape may be inserted 'into a pole otunit'orm diameter and suitably spaced inside pole at the point of igreatest weakness. ln both forms ot' the inl vention the reinforcingmember or members l are embedded in concrete or other ccmentitionsmaterialwithin the pole.

Referring to thc drawings, and more particularly to Fig. 1, A representsa metallic trolley pole comprising the sections B, C and D, and the capF. The section of largest l diameter is atl the bottom and is set in theat the ground line and bcmay be collapsed or contracted to til ground Gof which H represents the ground line. The reinforcing member comprisesthe heads J of metal, concrete or other suitable material, to which aresecured the spacing caps K. preferably of sprin metal. Secured at eachend in the heats H are the metallic rods or bars L of sufficientelasticity to be compressed within the smallest diameter of the Joleinthe upper section D. lThe cap F of t e pole is removed and thereinforcing member-described is thrust, down through the pole into theposition indicated in Fig. 1` extending above and below the ground lineto reinforce the pole at the point` at` which it has become corroded andweakened. Preferably concrete or other ceineiititious material is firstpoured into the pole to till the bottom of the pole to the de sircillic-iight, upon which the reinforcing Jneinbir is to rest'. After themember is in position more concrete or cementitioiis imiterial is pouredinto the pole embedding the reinforcing member in said material.

ln Figs.V il. l and 5. a modified forni of reinforcing mcinber is shownin which there is but one head J into which the rods L are wt. theopposite ends of the rods being free. Spacing blocks or washers f) aresecured on the r ids L. pieferal'ily at a point: along' their length. asfor instance, midway of their length. in which case the reinforcingmeniber takes the position indicated in Fig. 3 inl side of the pole. Therods L are spaced away from the walls of the pole to permit the concreteor other cemcutitious material to entirely surround and embed thereiuforcing member. As many reinforcing ineinbeis may be used as desiredwithin the paolo to reinforce several dilierent points o't1 weakness atthe same time.

In Figs. G, Tand 8 another modification of tlii` re'utorciugr member isshown in which the side bars L' are pivoted to the radial linlts P,which in turn are pivoted to thc blocks Q .secured on the central rod R.Preferably the side bars L are in the form of T bars and the outer endsof the links l are adapted to abut against the bases of the bar L. asshown in Fig. 7 when the member is expanded, thus maintaining the sidebars in their outermost position. This reinforcing nienibcr is insertedthrough the smaller end of the pole in collapsed position and allowed toexpand by the weight of the side bars into the larger portion of thepole and then einbedded in concrete. The connections of the side bars Lto the central rod R in ell'ect forni toggle acting joints.

Fig. i) shows thc method of constructing the reinforcing member shown inFig.

In Fig. 9, S is a block or form having. the recess therein and T is ametallic cap placed in said recess. U is a framework for supporting therods L. The lower ends ol these roi'ls are spaced in the forni ot' acircle in the pole and arranged so t is shown in which the metallic bandW is embedded in the material V around the ends' of the rods L forstrengthening purposes.

In Figs. 11 to 24 X indicates in each figure the pole to be reinforced,which, is cylindrical in this ease instead of being smaller at one endthan at the other. These figures are arranged in airs, showingdifferent; forms of structural) shapes arranged within the pole or otherhollow structure and in each pair of 'figuresthe reinforcing member ormembers are shown arranged against the walls of the pole and also spacedaway from said Valls. In Figs. 1l and 12 a split sleeve o is showninserted in the ole for reinforcing purposes and embedded) in concrete.In Figs. 13 and 14; a T rail b is shown, in Figs. 1.3 and 1G a series otT bars c, in Figs. 17 and 18 a series of rectangular bars d, in

Figs. 19 and 20 a` series of fiat bars e, in Figs. 21 and 22 a series ofround bars In Figs. 23 and 24 a series of round bars f 1s shown spacedaround the periphery of the pol l and a group of bars g is shownoccupyingthe space at one side of a diameter of a pole to reinforceone-half of the pole at one side of the neutral axis.

It is to be understood that if the structure X is a trolley pole. set inthe ground, the structural shapes shown ma be inserted in iiat theyextend above and below the ground line for reinforcing the pole at thispoint.

This invention, of course, is equally i1pplicable to the installation ofnew poles and similar structures, and can be used when the structuresare first installed, as Well as after they have been in use. Theinvention is also applicable t0 hollow structures, whether adapted to beused in an upright position or in a horizontal osition.

All ot' the forms of rein orcing members shown in Pigs. 1 to 10,inclusive, are simple in construction and cheap to manufacture andpossess the attributes essential for reinforcing structures of thecharacter described.

The preferred form of bottom casting for thc cage or reinforcing membersis shown in Figs. 25 to 30 inclusive. Thiscasting pret'ei'abl comprisesthe outer flaring cupped s raped member 50 having perforations 51 in theflange 52. The inner member 53 is shown in Figs. 28 to 30, and is anannular form having a scal-iped or recessed edge 5l. r1`he member 53 is)laced inside of the member 50 and thc reintorcing rods are licldbetween, said members.

le claim and desire to obtain by Letters latcnt. the following:

l. reinforcing member for reinforcing i.; block, a series of springmembers secured reinforeiner C1 as trolley ioles and ian' of to .saidblock and extending outwardly therefrom. and spaemg blot-lts carried bysaid spring members.

ll. A reinforcing menilgier for rein forcing hollow struetlnemlsm-htrolley poles and the like.y comprising a head or block, and

spring members extending outwardly therefrom in the form of a cone.

TMA reinforced hollou structure,

haring ma reinforcing member embedded in eonerete i or othereementitious material therein, said reinforcing member eomprisine atleast one lit-:nl or bloek, and longitndinalsprng members connectedthereto.

6. A reinforced hollow structure having a reinforcing member embedded inconcrete or other eenientitious material therein, said reinforcingmember eomprisin a pair of heads or blocks and longitudginal springmembers eolmecting said heads.

'l'. A hollow metallic trolley pole set in the ground andV reinforcedfrom the interior at the ground line by means of a reinforeing memberextending above and below the ground line and embedded in concrete orother eementitious material, said reinforcing member comprising at leastone head 0r block and a series of longitudinal spring members connectedto said head.

ln testimony whereof we have signed this specification in the presenceof two subseribing witnesses.

HERBERT H. HILBORN. CHARLES F. ROEHL.

lVitn'esseS as to signature of Herbert'. H. Hilborn JOHN J. HmfrERNAN,

l. D. (iranien. Witnesses as to signature of Charles ltoehl: Y

F. llENnuloKsoN, F. A. Cooney.

